Since extrusive rocks are formed by lava (not magma), the rocks can be found easier because they are on the surface, whereas intrusive rocks are formed underground so they are either harder to get to or they are found in smaller quantities.
I am a computer program, so I can quickly process and compare a large amount of data, making it easier to correlate diagrams. Geologists in the field have to rely on physical observations, which can be more time-consuming and prone to human error when reconstructing a sequence of events.
In outcrops and cliffs it is possible to see multiple layers of rock exposed in one place, which makes it easier to study a set of rocks.
The type of igneous rock that forms is primarily determined by the chemical composition of the magma from which it solidifies. Factors such as pressure and temperature can influence crystal size and texture, but they do not affect the type of igneous rock that ultimately forms.
You can group rocks based on their physical characteristics such as color, texture, density, and mineral composition. You can also classify them based on how they were formed, such as igneous, sedimentary, or metamorphic rocks. Grouping rocks in this way can help make identifying them easier by narrowing down their potential characteristics and origins.
Geologists divide Earth's history into time periods to better understand and study the evolution of the planet over millions of years. This classification helps organize geological events and changes, making it easier to compare and analyze different epochs. It provides a framework to document the sequence of events and geological processes that have shaped the Earth.
It's not necessarily easier to study extrusive versus intrusive rocks, simply because it depends on the exposure. In places like Hawaii, Iceland, Chile, and Yellowstone, where you have a great deal of geologically recent volcanism, it is very easy to study recent lava flows, and so in these places, it is easy to study extrusive igneous rocks. However, there are many places on the planet where granite, a classic example of an intrusive igneous rock, is exposed at the surface, so there is little difficulty in studying the intrusive igneous rocks at these locations.
No, but it's easier to see if you reverse the logic of the question. Intrusive rocks are igneous by definition, and these are all blends of crystalline minerals.
I don' t know
Intrusive rocks come into other rocks in a molten state and when they cool they are frequently very hard with interlocking cemented crystal structures. When erosion occurs it is easier for wind, ice and rain to wear down the rocks into which the igneous rocks were intruded than the hard igneous rocks themselves. This leaves the igneous rocks sticking up (like King Arther's Seat in Edinburgh or the Tours of Dartmoore) as prominent features.
I am a computer program, so I can quickly process and compare a large amount of data, making it easier to correlate diagrams. Geologists in the field have to rely on physical observations, which can be more time-consuming and prone to human error when reconstructing a sequence of events.
In outcrops and cliffs it is possible to see multiple layers of rock exposed in one place, which makes it easier to study a set of rocks.
Because when they form, minerals in igneous rocks often contain only a parent isotope and none of the daughter isotope. This makes the isotope percentage more accurate and easier to interpret.
The principle of uniformitarianism helps geologists understand Earth's past by suggesting that the processes observed today, such as erosion or volcanic activity, have also operated in the past at a similar rate and intensity. By studying these present-day processes, geologists can infer what processes may have influenced the geologic features of the past, aiding in reconstructing Earth's history.
The type of igneous rock that forms is primarily determined by the chemical composition of the magma from which it solidifies. Factors such as pressure and temperature can influence crystal size and texture, but they do not affect the type of igneous rock that ultimately forms.
Geologists would be interested in outcrops and/or cliffs because sometimes cliffs show the different beds of rock under the Earth's surface. This is easier than drilling into the ground and getting a sample of the rocks.
You would normally think that an igneous rock would be harder to break. However, it completely depends on which igneous rock is being compared to which sedimentary rock, as their resistance to breakage is so varied. There are some igneous rocks (obsidian and pumice, for example) that would break much easier than some sedimentary rocks, such as chert or flint.
You can group rocks based on their physical characteristics such as color, texture, density, and mineral composition. You can also classify them based on how they were formed, such as igneous, sedimentary, or metamorphic rocks. Grouping rocks in this way can help make identifying them easier by narrowing down their potential characteristics and origins.